Identity crisis


Arisaema triphyllum (jack-in-the-pulpit) has a unique adaptation to its environment. From year to year, it will produce flowers that are either male only or male and female, depending on environmental conditions at their growing spot. In a bad year or early in life, “Jack” sends out male only flowers, and one triad of leaves, because they are metabolically “cheaper” to produce. During a good year, “Jill” produces male-female flowers along with a second leafy triad.


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